A report in The Times said that if that report was critical, Mahmood was open to withdrawing confidence in the chief constable.
Guildford defended his force to the Commons Home Affairs Select Committee last week, saying there had been “no conspiracy” and repeating the safety claims.
He denied there had been political influence on the decision, and defended the force’s intelligence from previous Maccabi Tel Aviv matches.
Conservative leader Kemi Badenoch called for his resignation after the appearance, saying he had “capitulated to Islamists”.
On Tuesday, Norris told BBC Breakfast: “We were angered by what happened, I’ve attended Villa Park as an away fan, and the idea that others wouldn’t be able to do so because a judgement was made that we couldn’t protect them because of their faith, well of course, that cannot be right.
“This is being looked at by the independent inspectorate. We’re expecting a report to the home secretary, we’ll make our judgement and our basis on how to go forward based on those facts.
“We’ll wait until we see those facts but as I say, what we think happened wasn’t right, that’s why we’ve commissioned the work that we have.”